CFD team supports CERN development 19 May 2011 1M.Battistin CERN May 19 th 2011 C omputational F luid D ynamics team C omputational F luid D ynamics team.

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Presentation transcript:

CFD team supports CERN development 19 May M.Battistin CERN May 19 th 2011 C omputational F luid D ynamics team C omputational F luid D ynamics team supports CERN development

Who are we? CFD team supports CERN development 19 May M.Battistin The CFD activity started in EN/CV group around From that on a group of young engineers (technical students, fellows, project associates, UPAS, trainee programmes) took over this activity spending short to medium periods at CERN. In 2003 when the TS department was created, the Cooling and Ventilation Group decided to structure this activity into a formal team inside the Detector Cooling Section. Nowadays, the team counts with an average of three-four members spending between one and five years in the team. The team uses STAR-CD and STAR-CCM+, in the last year we moved all our news project to STAR-CCM+ and, in the next future, to OpenFOAM.

CFD is useful in many fields at CERN Natural and forced convection heat transfer ATLAS 3D HX15 and muon chambers cooling, ALICE Muon, ALICE L3 ventilation Some chamber need an additional cooling source: a thermal screen will be implemented. Definition of the ventilation scheme of new L3 rails. Air coolingRF-Cavity cooling, CNGS Horn and Reflector air cooling analysis, LINAC4 ventilation, Bdg 513 ventilation of the grid computer room. Cavity geometry design has been modified. Additional gaps in the shielding walls, trenches on the target chamber floor. Number and position of ventilator diffuser has been optimized. Server Rack cold corridors has been closed. Water coolingSPS magnet cooling analysisExact definition of the heat power evacuated by cooling water and air. SafetyCNGS tunnel: flow analysis in case of decay tunnel cap rupture. The Globe: fire effect simulation, transient temperature distribution. Special duct installation to resist to high pressure and move the high speed point in a safe zone of ECA4 cavern. Gas distributionATLAS Inner Tracker CO 2 and N 2 flow analysis. Flushing time estimation before cooling Definition of the inlet points position and the time to complete the flush. Pollutant dispersionISOLDE activated gas decay, HirRadMat activated gas flashing time. Define the time needed to flash the tunnel before human access. Humidity distributionCMS Tracker flow analysis.Reduction of inlet points from 8 to 1. M.Battistin3CFD team supports CERN development 19 May 2011

CFD is useful in many fields at CERN Natural and forced convection heat transfer ATLAS 3D HX15 and muon chambers cooling, ALICE Muon, ALICE L3 ventilation Some chamber need an additional cooling source: a thermal screen will be implemented. Definition of the ventilation scheme of new L3 rails. Air coolingRF-Cavity cooling, CNGS Horn and Reflector air cooling analysis,LINAC4 ventilation, Bdg 513 ventilation of the grid computer room. Cavity geometry design has been modified. Additional gaps in the shielding walls, trenches on the target chamber floor. Number and position of ventilator diffuser has been optimized. Server Rack cold corridors has been closed. Water coolingSPS magnet cooling analysisExact definition of the heat power evacuated by cooling water and air. SafetyCNGS tunnel: flow analysis in case of decay tunnel cap rupture. The Globe: fire effect simulation, transient temperature distribution. Special duct installation to resist to high pressure and move the high speed point in a safe zone of ECA4 cavern. Gas distributionATLAS Inner Tracker CO 2 and N 2 flow analysis. Flushing time estimation before cooling Definition of the inlet points position and the time to complete the flush. Pollutant dispersionISOLDE activated gas decay, HirRadMat activated gas flashing time. Define the time needed to flash the tunnel before human access. Humidity distributionCMS Tracker flow analysis.Reduction of inlet points from 8 to 1. ALICE L3- Ventilation Rails ATLAS UX15 Cavern M.Battistin4CFD team supports CERN development 19 May 2011

CFD is useful in many fields at CERN Natural and forced convection heat transfer ATLAS 3D HX15 and muon chambers cooling, ALICE Muon, ALICE L3 ventilation Some chamber need an additional cooling source: a thermal screen will be implemented. Definition of the ventilation scheme of new L3 rails. Air coolingRF-Cavity cooling, CNGS Horn and Reflector air cooling analysis, LINAC4 ventilation, Bdg 513 ventilation of the grid computer room. Cavity geometry design has been modified. Additional gaps in the shielding walls, trenches on the target chamber floor. Number and position of ventilator diffuser has been optimized. Server Rack cold corridors has been closed. Water coolingSPS magnet cooling analysisExact definition of the heat power evacuated by cooling water and air. SafetyCNGS tunnel: flow analysis in case of decay tunnel cap rupture. The Globe: fire effect simulation, transient temperature distribution. Special duct installation to resist to high pressure and move the high speed point in a safe zone of ECA4 cavern. Gas distributionATLAS Inner Tracker CO 2 and N 2 flow analysis. Flushing time estimation before cooling Definition of the inlet points position and the time to complete the flush. Pollutant dispersionISOLDE activated gas decay, HirRadMat activated gas flashing time. Define the time needed to flash the tunnel before human access. Humidity distributionCMS Tracker flow analysis.Reduction of inlet points from 8 to 1. Building 513 M.Battistin5CFD team supports CERN development 19 May 2011

6M.Battistin CFD is useful in many fields at CERN Natural and forced convection heat transfer ATLAS 3D HX15 and muon chambers cooling, ALICE Muon, ALICE L3 ventilation Some chamber need an additional cooling source: a thermal screen will be implemented. Definition of the ventilation scheme of new L3 rails. Air coolingRF-Cavity cooling, CNGS Horn and Reflector air cooling analysis,LINAC4 ventilation, Bdg 513 ventilation of the grid computer room. Cavity geometry design has been modified. Additional gaps in the shielding walls, trenches on the target chamber floor. Number and position of ventilator diffuser has been optimized. Server Rack cold corridors has been closed. Water coolingSPS magnet cooling analysisExact definition of the heat power evacuated by cooling water and air. SafetyCNGS tunnel: flow analysis in case of decay tunnel cap rupture. The Globe: fire effect simulation, transient temperature distribution. Special duct installation to resist to high pressure and move the high speed point in a safe zone of ECA4 cavern. Gas distributionATLAS Inner Tracker CO 2 and N 2 flow analysis. Flushing time estimation before cooling Definition of the inlet points position and the time to complete the flush. Pollutant dispersionISOLDE activated gas decay, HirRadMat activated gas flashing time. Define the time needed to flash the tunnel before human access. Humidity distributionCMS Tracker flow analysis.Reduction of inlet points from 8 to 1.

CFD team supports CERN development 19 May M.Battistin CFD is useful in many fields at CERN Natural and forced convection heat transfer ATLAS 3D HX15 and muon chambers cooling, ALICE Muon, ALICE L3 ventilation Some chamber need an additional cooling source: a thermal screen will be implemented. Definition of the ventilation scheme of new L3 rails. Air coolingRF-Cavity cooling, CNGS Horn and Reflector air cooling analysis,LINAC4 ventilation, Bdg 513 ventilation of the grid computer room. Cavity geometry design has been modified. Additional gaps in the shielding walls, trenches on the target chamber floor. Number and position of ventilator diffuser has been optimized. Server Rack cold corridors has been closed. Water coolingSPS magnet cooling analysisExact definition of the heat power evacuated by cooling water and air. SafetyCNGS tunnel: flow analysis in case of decay tunnel cap rupture. The Globe: fire effect simulation, transient temperature distribution. Special duct installation to resist to high pressure and move the high speed point in a safe zone of ECA4 cavern. Gas distributionATLAS Inner Tracker CO 2 and N 2 flow analysis. Flushing time estimation before cooling Definition of the inlet points position and the time to complete the flush. Pollutant dispersionISOLDE activated gas decay, HirRadMat activated gas flashing time. Define the time needed to flash the tunnel before human access. Humidity distributionCMS Tracker flow analysis.Reduction of inlet points from 8 to 1.

CFD team supports CERN development 19 May M.Battistin CFD is useful in many fields at CERN Natural and forced convection heat transfer ATLAS 3D HX15 and muon chambers cooling, ALICE Muon, ALICE L3 ventilation Some chamber need an additional cooling source: a thermal screen will be implemented. Definition of the ventilation scheme of new L3 rails. Air coolingRF-Cavity cooling, CNGS Horn and Reflector air cooling analysis,LINAC4 ventilation, Bdg 513 ventilation of the grid computer room. Cavity geometry design has been modified. Additional gaps in the shielding walls, trenches on the target chamber floor. Number and position of ventilator diffuser has been optimized. Server Rack cold corridors has been closed. Water coolingSPS magnet cooling analysisExact definition of the heat power evacuated by cooling water and air. SafetyCNGS tunnel: flow analysis in case of decay tunnel cap rupture. The Globe: fire effect simulation, transient temperature distribution. Special duct installation to resist to high pressure and move the high speed point in a safe zone of ECA4 cavern. Gas distributionATLAS Inner Tracker CO 2 and N 2 flow analysis. Flushing time estimation before cooling Definition of the inlet points position and the time to complete the flush. Pollutant dispersionISOLDE activated gas decay, HirRadMat activated gas flashing time. Define the time needed to flash the tunnel before human access. Humidity distributionCMS Tracker flow analysis.Reduction of inlet points from 8 to 1. N 2 circulation inside SCT

CFD team supports CERN development 19 May M.Battistin CFD is useful in many fields at CERN Natural and forced convection heat transfer ATLAS 3D HX15 and muon chambers cooling, ALICE Muon, ALICE L3 ventilation Some chamber need an additional cooling source: a thermal screen will be implemented. Definition of the ventilation scheme of new L3 rails. Air coolingRF-Cavity cooling, CNGS Horn and Reflector air cooling analysis,LINAC4 ventilation, Bdg 513 ventilation of the grid computer room. Cavity geometry design has been modified. Additional gaps in the shielding walls, trenches on the target chamber floor. Number and position of ventilator diffuser has been optimized. Server Rack cold corridors has been closed. Water coolingSPS magnet cooling analysisExact definition of the heat power evacuated by cooling water and air. SafetyCNGS tunnel: flow analysis in case of decay tunnel cap rupture. The Globe: fire effect simulation, transient temperature distribution. Special duct installation to resist to high pressure and move the high speed point in a safe zone of ECA4 cavern. Gas distributionATLAS Inner Tracker CO 2 and N 2 flow analysis. Flushing time estimation before cooling Definition of the inlet points position and the time to complete the flush. Pollutant dispersionISOLDE activated gas decay, HirRadMat activated gas flashing time. Define the time needed to flash the tunnel before human access. Humidity distributionCMS Tracker flow analysis.Reduction of inlet points from 8 to 1. ISOLDE Ventilation

CFD team supports CERN development 19 May M.Battistin CFD is useful in many fields at CERN Natural and forced convection heat transfer ATLAS 3D HX15 and muon chambers cooling, ALICE Muon, ALICE L3 ventilation Some chamber need an additional cooling source: a thermal screen will be implemented. Definition of the ventilation scheme of new L3 rails. Air coolingRF-Cavity cooling, CNGS Horn and Reflector air cooling analysis,LINAC4 ventilation, Bdg 513 ventilation of the grid computer room. Cavity geometry design has been modified. Additional gaps in the shielding walls, trenches on the target chamber floor. Number and position of ventilator diffuser has been optimized. Server Rack cold corridors has been closed. Water coolingSPS magnet cooling analysisExact definition of the heat power evacuated by cooling water and air. SafetyCNGS tunnel: flow analysis in case of decay tunnel cap rupture. The Globe: fire effect simulation, transient temperature distribution. Special duct installation to resist to high pressure and move the high speed point in a safe zone of ECA4 cavern. Gas distributionATLAS Inner Tracker CO 2 and N 2 flow analysis. Flushing time estimation before cooling Definition of the inlet points position and the time to complete the flush. Pollutant dispersionISOLDE activated gas decay, HirRadMat activated gas flashing time. Define the time needed to flash the tunnel before human access. Humidity distributionCMS Tracker flow analysis.Reduction of inlet points from 8 to 1.

CFD team supports CERN development 19 May M.Battistin Mission of the team is to give support to LHC machine and detectors performing CFD studies during the prototype, design, development and operation phases of their components Resources Example studies: –CAST Assessment of measurement uncertainty –RF Cavity cooling Numerical prototyping aiding the design CFD evolution at CERN What we do?